JP2001178252A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate such inconvenience as a grain-discharging auger continues to turn to the mechanically turn-limiting position to contact with an obstacle when a hold position-detecting means is out or order in a combine harvester equipped with an automatic hold-controlling means for automatically turning the auger to a hold position. SOLUTION: In the combine harvester 1 equipped with an electric motor 11 for setting the auger 9 turning, an auger position-detecting sensor 18 for detecting the turning position of the auger 9, a hold position-detecting switch 20 for detecting the hold position of the auger 9 and the automatic hold- controlling means for the auger which automatically sets the auger 9 turning to the position detecting the switch 20, a case that the switch 20 does not work even when the auger 9 passes the hold position is judged to be abnormal on the basis of the detection signal of the sensor 18 and a turning operation for the automatic hold of the auger 9 is made to halt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a combine having automatic storage control means for automatically turning a grain discharging auger to a storage position.

[0002]

2. Description of the Related Art In general, this type of combine includes
A grain discharging auger that is rotatable with respect to the machine body, an auger turning actuator for forcibly turning the auger, storage position detecting means for detecting a storage position of the auger, and detection of the storage position detection means An automatic storage control means for automatically turning the auger to a position is provided.

[0003]

However, in the above-mentioned apparatus, if the storage position detecting means breaks down, the auger is not allowed to automatically stop at the storage position but continues to rotate to the mechanical turning limit position. May come into contact with obstacles.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve these problems in view of the above-mentioned circumstances, and has an auger for turning a grain that can be swiveled with respect to an airframe. An auger turning actuator for forcibly turning the auger, an auger position detecting means for detecting a turning position of the auger, a storing position detecting means for detecting a storing position of the auger, and a storing position detecting means. An automatic storage control means for automatically turning the auger to the detection position, wherein the automatic storage control means includes an auger position detection means in a case where the storage position detection means does not operate even when the auger passes the storage position. The automatic storage abnormality judging means for judging an abnormality based on the detection signal of (1) and stopping the auger automatic storage turning operation is provided. That is, even if the storage position detecting means breaks down, the automatic storage and rotation operation of the auger can be stopped near the storage position, so that the auger cannot continue to rotate to the mechanical rotation limit position. Inconveniences such as the auger contacting an obstacle can be avoided. The storage position detection means is constituted by a limit switch for detecting the storage position of the auger which is a fixed position, while the auger position detection means is provided with a potentiometer for detecting an auger grain discharge position which can be arbitrarily changed. It is characterized by comprising. That is, since the abnormality of the storage position detecting means is determined by using the potentiometer for detecting the grain discharge position, it can be implemented with a simple change such as rewriting a part of the program. This eliminates the need for addition and can avoid an increase in the number of parts and a complicated structure.

[0005]

Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, 1 is a combine, and the combine 1 is a pre-processing unit 2 for cutting stem culms, a threshing sorting unit 3 for threshing grains from the cut stems and selecting kernels, A grain tank 4 for storing
It comprises a post-processing unit 5 for discharging threshed culms, a crawler-type traveling unit 6, an operation unit 7 provided with various operation tools, and the like, all of which have a conventional configuration.

The grains stored in the grain tank 4 are fixed to a fixed pipe (not shown) fixed at the lower end of the rear surface of the grain tank 4 and a vertical pipe rotatably connected to the fixed pipe. The grain is discharged out of the machine via a pipe 8 and a grain discharging auger 9 which is integrally rotatable with the upper end of the vertical pipe 8 and is connected to the up and down direction (up and down and up and down). It has become. That is, at the bottom of the grain tank 4, a first spiral transport body (not shown) facing the front-rear direction is disposed, and the first spiral transport body transfers the kernel transported to the fixed pipe to the vertical pipe. The second and third spiral transporters (not shown) provided inside the auger 8 and the auger 9 take over.

The auger 9 moves up and down in accordance with the expansion and contraction of a lifting hydraulic cylinder 10 interposed between the vertical pipe 8 and the auger 9, while turning an electric motor 11 for rotating the vertical pipe 8. Turns with the forward / reverse drive of
At the time of non-discharge work, it is stored in a predetermined storage position. That is, a substantially Y-shaped auger storage base 12 is erected at a predetermined position in the upper part of the fuselage, and after the swivel operation is performed to a position above the auger storage base 12, the auger 9 is stored by descending operation. It has become so.

Reference numeral 13 denotes a turning drive mechanism in which the turning electric motor 11 is incorporated.
Is a reduction gear 1 that reduces the power of the electric motor 11 for turning.
4, a turning drive gear 16 provided integrally with the output shaft 15 of the speed reducer 14, a ring gear 17 meshing with the turning drive gear 16, and the like. And the ring gear 17
Is integrally fixed to the outer peripheral portion of the vertical pipe 8, so that the vertical pipe 8 and the auger 9 rotate integrally with the forward / reverse drive of the electric motor 11 for rotation. The turning position is detected by an auger position detection sensor (potentiometer) 18 incorporated in the turning drive mechanism 13 and transmitted to a control unit 19 described later.

Reference numeral 20 denotes a storage position detection switch provided at a position facing the outer peripheral portion of the vertical pipe 8. The storage position detection switch 20 performs a pushing operation of a detection lever 20a formed in a substantially L-shape in plan view. It consists of a limit switch (micro switch) for detecting. That is, a protrusion member 21 having a mountain shape is projected from an outer peripheral portion of the vertical pipe 8, and when the detection member 20 presses the detection lever 20 a in the auger storage position, the storage position detection switch 20 detects and operates. , The detection signal of which is
9 is transmitted.

Reference numeral 22 denotes an auger operation unit provided on the operation unit 7. The auger operation unit 22 has an auger manual operation lever (joystick) 23 for performing a manual turning operation and a manual elevating operation of the auger 9; A turning position setting dial 24 for setting an automatic stop position of an auger automatic turning control described later, an auger automatic turning switch 25 for executing an auger automatic turning control, and executing an auger automatic storage control described later. And an emergency stop switch 27 for stopping the automatic auger turning operation and the automatic auger storing operation.

The control section 19 is constituted by using a microcomputer (including a CPU, a ROM, a RAM, etc.), and has on its input side an auger position detection sensor 18, a storage position detection switch 20, an auger A predetermined input interface circuit includes a manual operation lever 23, a turning position setting dial 24, an auger automatic turning switch 25, an auger automatic storage switch 26, and an emergency stop switch 27, and an auger upper limit switch 28 for detecting an ascending limit position of the auger 9. On the output side, in addition to the electric motor 11 for turning described above, a solenoid 29a for raising and a solenoid 29b for lowering the auger electromagnetic valve 29 are connected via a predetermined output interface circuit. Have been. That is, the control unit 19 performs “auger manual operation control” for controlling the turning and lifting of the auger 9 in accordance with the operation signal of the auger manual operation lever 23, and the detection position of the auger position detection sensor 18 is set to the setting position of the turning position setting dial 24. Control programs such as "auger automatic turning control" for automatically turning the auger 9 until the auger 9 is matched, and "auger automatic storing control" for automatically turning the auger 9 to the storage position (elevation control). Hereinafter, a control procedure of “auger automatic storage control”, which is a main part of the present invention, will be described with reference to flowcharts.

In the "auger automatic storage control", first,
Rising signal of auger automatic storage switch 26 (OFF → O
N) is determined, and if the rising signal is determined, the storage flag is set. Then, in the storage flag setting state, the set state of the rising end flag is determined, and if it is determined that the rising end flag is in the reset state, the auger 9 is automatically raised for a predetermined time, Set end flag. When it is determined that the rising end flag is in the set state, it is determined whether the turning end flag is in the set state, and when it is determined that the turning end flag is in the reset state, the storage position detection switch 20 is set.
After turning the auger 9 automatically until is turned on, the turning end flag is set. On the other hand, when it is determined that the turning end flag is in the set state, the auger 9 is automatically lowered for a predetermined time, and then all the flags are reset to end the auger automatic storage operation. In other words, the “auger automatic storage control” automatically performs a series of auger storage operations such as a lifting operation of the auger 9, a turning operation to the storage position, and a lowering operation at the storage position. Is turned on, all the flags are immediately reset to stop the automatic storage operation of the auger 9.

In the "auger automatic storage control", as described above, when it is determined that the rotation end flag is in the reset state, the auger 9 is automatically rotated until the storage position detection switch 20 is turned on. During the automatic turning of the auger 9, whether or not the auger 9 has passed the storage position is determined based on the detection signal of the auger position detection sensor 18, and if the determination is YES, all of the The flag is reset to stop the automatic storage operation of the auger 9. That is, the storage position detection switch 20
Can be stopped in the vicinity of the storage position even if the auger 9 is out of order.
Is not allowed to continue turning to the mechanical turning limit position, and inconveniences such as the auger 9 contacting an obstacle can be avoided. In the present embodiment, the detection value of the auger position detection sensor 18 is stored as a reference value when the auger is stored, and the detection value of the auger position detection sensor 18 exceeds the reference value and the stroke of the auger during automatic storage turning. By judging that the storage position detection switch 20 is abnormal when the angle (the dead zone threshold) is reached, malfunction based on a detection error of the auger position detection sensor 18 is prevented.

An electric motor 11 for turning the auger 9 for turning, an auger position detecting sensor 18 for detecting the turning position of the auger 9,
Storage position detection switch 2 for detecting the storage position of auger 9
"Auger automatic storage control" for automatically turning the auger 9 to 0 and the detection position of the storage position detection switch 20.
The "auger automatic storage control"
When the storage position detection switch 20 does not operate even when the auger 9 passes the storage position, the auger position detection sensor 1
The automatic storage and rotation operation of the auger 9 is stopped near the storage position even if the storage position detection switch 20 breaks down because the automatic storage and rotation operation of the auger 9 is stopped by judging that it is abnormal based on the detection signal of 8. And as a result,
Not only is the auger 9 not allowed to continue turning to the mechanical turning limit position, but also inconvenience such as the auger 9 contacting an obstacle can be avoided.

Further, since an abnormality of the storage position detection switch 20 is determined by using an existing auger position detection sensor (potentiometer) 18 for detecting a grain discharge position, the change can be easily made by rewriting a part of the program. As a result, it is not necessary to add a sensor or the like, and it is possible to avoid an increase in the number of components and a complicated structure.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a rear view of the same.

FIG. 5 is a side view of the turning drive mechanism.

FIG. 6 is a plan view of the same.

FIG. 7 is a plan view of an auger operation unit.

FIG. 8 is a block diagram showing input and output of a control unit.

FIG. 9 is a flowchart illustrating “auger automatic storage control”.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine 4 Grain tank 8 Vertical pipe 9 Auger 10 Hydraulic cylinder for raising / lowering 11 Electric motor for turning 12 Auger storage stand 18 Auger position detection sensor 19 Control unit 20 Storage position detection switch 23 Auger manual operation lever 24 Turning position setting dial 25 Auger Automatic turning switch 26 Auger automatic storage switch 27 Emergency stop switch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiro Nishikori 667 Iya-cho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 F term in Mitsubishi Agricultural Machinery Co., Ltd. (Reference) 2B396 JA04 JC07 KE03 KE04 LA03 LC07 LE02 LE09 LE16 LR02 LR08 LR15 MA07 MC04 MC13 PA02 PA12 PA30 PA47 PE06 QA02 QA12 QA22 QC01 QE02 QE25 RA10 RA25

Claims (2)

[Claims] 1. An auger for discharging a grain that is rotatable with respect to an airframe, an auger turning actuator for forcibly turning the auger, an auger position detecting means for detecting a turning position of the auger, and the auger. A storage position detecting means for detecting the storage position of the auger, and an automatic storage control means for automatically turning the auger to the detection position of the storage position detection means. If the storage position detection means does not operate even after passing through, the automatic storage abnormality determination means for determining that there is an abnormality based on the detection signal of the auger position detection means and stopping the automatic storage rotation operation of the auger is provided. Combine to do. 2. The auger grain detecting device according to claim 1, wherein the storing position detecting means includes a limit switch for detecting a storing position of the auger which is a fixed position. A combine comprising a potentiometer for detecting a particle discharging position.